Brown patches on Citronelle?

kentstar(5b, NE Ohio)May 4, 2012

I have two Citronelle that every year they develop some brown spotting or patches on their leaves. I wonder if it's a fungal disease? or something else. I can post a pic tomorrow. It happens every year. Maybe just on old leaves? Does anyone else have this problem? Otherwise they both grow just fine and look gorgeous except for the leaves with the patches.

I've been having brown patches on Caramel Heuchera just in the last 2-3 weeks. They're a new plant for me and only ten months in ground. It's the mature leaves that are affected and they have subsequently shrivelled up and fallen off completely. Could this condition be "normal" considering the unusually cool, wet Spring we've had in Seattle? Many of the plants in my yard seem a little, well, confused this year.

I clipped off the dead/dying leaves, and there are new, so far healthy, baby leaves growing below. So I'm crossing my fingers that nutmeg4061 is correct, and that the plants will recover.

Here's a picture of Citronelle and some others earlier this month. You can see the patches on Citronelle. Well, the picture doesn't show up very large on this forum so maybe you can't see it. Citroneele is the chartreuse in the distance. Caramel is the gold colored one- it wasn't showing burned spots earlier in June but is now as it is hotter and drier.